Is Isis, the mobile payment joint venture between Verizon, AT&T and T-Mobile, finally ready for prime time? According to a changelog for a new software update that is headed to T-Mobile's Galaxy S2, it may very well be. For those not familiar, Isis is an NFC-based mobile payment system that 3 of the 4 major U.S. wireless carriers (Sprint excluded) partnered up to create. It's essentially the reason that Google Wallet won't work on any of your phones.
